Charles w



(No Model.)

- C. W. CRABTREE 8v J. W. COLLINS. v

STOVB DAMPER.

No. 436,697. Patented sept. 16, 1890.

Umb

UNITED STATES PATENT OFFICE.

CHARLES W. CRABTREE AND J OI-IN W. COLLINS, OF KINSTON, NORTH CAROLINA; SAID CRABTREE ASSIGNOR TO HENRY D. HARPER, OF

SAME PLACE.

STOVE-DAM PER.

SPECIFICATION forming part f Letters Patent N0. 436,697, datcdiseptember 16, 1890. Application filed April l2, 1890. Serial N0l347j658. (No model.)

To all whom it may concern;

Be it known that we, CHAELEs W. CRABTEEE and JOHN W. COLLTNS, citizens of the United States, residing at Kinston, in the county of Lenoir and State of North Carolina, have invented certain new and useful Improvements in Stove-Dalnpers; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this.

specification, and to the letters of reference marked thereon.

This invention relates to certain new and useful improvements in dampers for stoves, designed more particularlyforcooking-stoves; and it has for its object, among others, to provide for the ready repair or replacement of a damper when from any cause it becomes out of order or broken or Worn out. Our damper will not bind, even though the top of the stove settles or warps downward, and, be-

ing operated from the outside, can be easily replaced by unskilled labor.

Joint-ed dampers have been proposed, so that they may be readily replaced without removing the rods of the stove or taking the stove to pieces; but while these dampers can be very readily managed when new, as far as putting in is concerned, when the damper-rod is broken or burned off the rust and iire have so set the nut that it can only be removed by the use of a cold-chisel or analogous device. Vith inside dampers, when the top of the stove settles or warps, as it is almost sure to do in a short time, the damper will bind, rendering it impossible to operate it without breaking the rod (orhandle) or to iit a new damper without trimming the saine, so that' Fig. 2 is a vertical section through Referring' now to the details of the drawings by letter,'A designates the upper portion of a cooking-stove, through the main top B of which is formed an opening C, surrounded by a neck a to receive the smoke-pipe b, (shown by dotted lines,) which neck is known as the pipe-collar. A short distance in front of the pipe-collar there is formed through the main top an opening, through which the damper is designed to slide. The main top upon each side of this opening on the under side is formed with depending ribs c,- which serve both to strengthen the same and also as guides for the damper.

D are the flanges or proj ectiug edges on the flue-strips of almost all cooking stoves and ranges, serving to support the damper, as shown in both views, and E is the damper, of any suitable material, adapted to work through the opening and be guided by the said ribs and flanges, as shown. The upper edge of this damper is formed with a head-piece substantially T-shaped in cross-section, as shown, and which is adapted when the damper is down to bridge the opening in the main top and closely cover the same and prevent ingress of air or escape of the smoke, as will be readily understood.

F is a yoke of substantially rectangular form pivoted upon the brackets or posts G on the top of the stove upon opposite sides of the opening C therein, and at the front end this yoke or lever is pivotally connected with the head of the damper in any suitable manner, preferably, however, as shown in the drawings, wherein the head is shown as formed with upwardlyaextending lugs d, to which are pivotally connected one end of the links e,

the opposite ends of which are pivotally connected to the front bar of the yoke or lever, as shown.

It will readily be seen how by operating the lever the damper may be readily controlled. The upper end of the damper and all the arrangements for working it being at all times Within full view of the attendant serves as a reminder that there is a damper to the stove and also as an indicator to tell the amount that the damper is opened.

Of course various modifications in detail may be resorted to Without departing from the spirit of the invention. For instance, the head of the damper may be formed with but a single upwardly-extending lug arranged centrally and only one link employed.

We preferably employ thumb-screws as the pivots for the lever, but do not restrict ourselves to their use.

To form the necessary combination with a large number of the stoves and ranges now made, the only alteration necessary would be 'that in the main tophto wit, the opening to receive the damper and thebolt-holeshoneon each side ofthe pipe-collar-through which to bolt the posts G to the stove, as the damper may slide downward between the front edges of the Hue-strips and just back ofthe flanges on same. It may occasionally occur that a stove or range may be so constructed that the flue-strips may need slight alteration.

What we claim as new is* 1. The combination, with the main top having an opening therein for the damper and formed upon its under side with depending ribs c upon each side of said opening, of the damper adapted to be moved vertically through said opening and formed at its upper end with lugs d, the uprights on the main top, the yoke pivoted in said uprights, and the links pivotally connecting the front bar of the yoke with the lugs ot' the damper, substantially as shown and described.

2. The combination, with the main top having an opening therein for the damper and formed upon its under side with depending ribs c upon each side of said opening, of the damper adapted to move vertically in said opening between the ribs and having a T- shaped head above the main top to bridge the opening therein, the forked uprights on the main top, the rectangular yoke pivoted between the forks of the uprights and embracing the smoke-pipe, and the links pivotally connected to the T-shaped head of the damper and with the front bar of the yoke, substantially as shown and described.

In testimony that we claim the above We have hereunto subscribed our names in the presence of two witnesses.

CHARLES W. CRABTREE. JOHN W. COLLINS. l Witnesses:

J. Q. J AcKsoN, M. A. GRAY. 

